Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02289602f213e5b2d50058d7f2b217c805c25d4b7725fc070c608449429ce02d' 
  AND token = 'j5LZHBXsqo1A6vIpf50FjhTyG6osjBu+J8Yvy2GQJnw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}